Fern Posted December 21, 2009 Share Posted December 21, 2009 Recently I have installed digital thermometer and found out that my engine is running at 60-70C. Thermostat is around 88C as I know. So who knows, what is the normal operating temperature? 80C, 85C, 90C, 95C? I think that my temperature is low. OR it should be so. I'm confused. If temp should be higher then I suspect early thermostat opening. Also I experience high fuel consumption around 25L per 100km (11.2 mpg). Quote Link to comment Share on other sites More sharing options...
Quagmire Posted December 21, 2009 Share Posted December 21, 2009 My 3.5 runs at around 82-84 degrees... Well thats if i calibrated my sender to read correctly for Megajolt anyway. It does go up and down a bit- but generally stays in the above range when cruising in this weather on motorway. Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted December 21, 2009 Share Posted December 21, 2009 The correct operating temp is 88C - 90C when a 88C thermostat is fitted. At the temperature you are quoting I suspect that your thermostat is stuck partially open (common fault with wax stats) Quote Link to comment Share on other sites More sharing options...
Fern Posted December 21, 2009 Author Share Posted December 21, 2009 Thanks guys. You have just made it clear that I need a new thermostat. Unfortunately mine is only 10k km. Quote Link to comment Share on other sites More sharing options...
Fern Posted December 25, 2009 Author Share Posted December 25, 2009 Yesterday have bought a new thermostat. Then putten new one and an old one into glass and filled it with boiled water. The old one opened earlier then the new one. I have fitted a new one and my heater is much hoter than it was. I guess it helped:) Quote Link to comment Share on other sites More sharing options...
Brian S Posted December 26, 2009 Share Posted December 26, 2009 Did it improve the fuel consumption? Quote Link to comment Share on other sites More sharing options...
Fern Posted January 13, 2010 Author Share Posted January 13, 2010 Did it improve the fuel consumption? I had a trip for 2000km and now I can say that fuel comsumption is now acceptable and is reduced by 1/4 of previous measurements. I am happy. Quote Link to comment Share on other sites More sharing options...
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